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Reducing functional network vulnerability : Structural indicators to help towards traffic regulation on a damaged transportation network / Jean-François Gleyze (2007)
contenu dans ECTQG07, 15th european colloquium on theoretical and quantitative geography, 7 - 11 September 2007, City of Montreux, Switzerland / François Bavaud (2007)
Titre : Reducing functional network vulnerability : Structural indicators to help towards traffic regulation on a damaged transportation network Type de document : Article/Communication Auteurs : Jean-François Gleyze , Auteur
Editeur : Lausanne [Suisse] : Institut géographique de l'Université de Lausanne Année de publication : 2007 Conférence : ECTQG 2007, 15th European colloquium on theoretical and quantitative geography 07/09/2007 11/09/2007 Montreux Suisse Importance : pp. 169 - 173 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications SIG
[Termes IGN] gestion des risques
[Termes IGN] régulation dynamique
[Termes IGN] réseau de transport
[Termes IGN] trafic routier
[Termes IGN] vulnérabilitéRésumé : (auteur) The physical impact of hazards is particularly prejudicial to transportation networks insofar as it indirectly threatens the paths organization and therefore the users repartition on the networks components (nodes and edges). The detours induced by a damage on a given network are usually highlighted by comparing the shortest paths between the normal and the damaged network configurations. Beyond this comparison, we show that the information supplied by the shortest paths is much richer and helps to understand the functional role of network nodes inside the detours, to locate the users who are concerned by these detours and to assess the facilities naturally supplied by the network to avoid the damaged components. The indicators developed in this article prove to be useful tools to spread regulation traffic information in case of crisis. Numéro de notice : C2007-007 Affiliation des auteurs : COGIT (1988-2011) Thématique : GEOMATIQUE/URBANISME Nature : Communication DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=82725
Titre : Road approximation in euclidean and v-disparity space: A comparative study Type de document : Article/Communication Auteurs : Angel D. Sappa, Auteur ; Rosa Herrero, Auteur ; Fadi Dornaika , Auteur ; David Geronimo, Auteur ; Antonio Lopez, Auteur
Editeur : Berlin, Heidelberg, Vienne, New York, ... : Springer Année de publication : 2007 Collection : Lecture notes in Computer Science, ISSN 0302-9743 num. 4739 Conférence : EUROCAST 2007, 11th International Conference on Computer Aided Systems Theory 12/02/2007 16/02/2007 Las Palmas de Gran Canaria Espagne Importance : pp 1105 - 1112 Format : 16 x 24 cm Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image optique
[Termes IGN] détection d'objet
[Termes IGN] espace euclidien
[Termes IGN] réseau routier
[Termes IGN] transformation de Hough
[Termes IGN] vision stéréoscopiqueRésumé : (auteur) This paper presents a comparative study between two road approximation techniques—planar surfaces—from stereo vision data. The first approach is carried out in the v-disparity space and is based on a voting scheme, the Hough transform. The second one consists in computing the best fitting plane for the whole 3D road data points, directly in the Euclidean space, by using least squares fitting. The comparative study is initially performed over a set of different synthetic surfaces (e.g., plane, quadratic surface, cubic surface) digitized by a virtual stereo head; then real data obtained with a commercial stereo head are used. The comparative study is intended to be used as a criterion for fining the best technique according to the road geometry. Additionally, it highlights common problems driven from a wrong assumption about the scene’s prior knowledge. Numéro de notice : C2007-059 Affiliation des auteurs : MATIS+Ext (1993-2011) Thématique : IMAGERIE Nature : Communication nature-HAL : ComAvecCL&ActesPubliésIntl DOI : 10.1007/978-3-540-75867-9_138 En ligne : https://doi.org/10.1007/978-3-540-75867-9_138 Format de la ressource électronique : URL Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=102617
Titre : Übergangsbogen für Bahnen mit hohen Fahrgeschwindigkeiten Titre original : [Courbes de passage pour les trains avec grandes astuces] Type de document : Monographie Auteurs : P. Schuhr, Auteur Editeur : Munich : Bayerische Akademie der Wissenschaften Année de publication : 2007 Collection : DGK - B Sous-collection : Angewandte Geodäsie num. 314 Importance : 76 p. Format : 21 x 30 cm ISBN/ISSN/EAN : 978-3-7696-8594-7 Note générale : Bibliographie Langues : Allemand (ger) Descripteur : [Vedettes matières IGN] Géodésie physique
[Termes IGN] centre de gravité
[Termes IGN] force de gravitation
[Termes IGN] modélisation
[Termes IGN] pente
[Termes IGN] voie ferréeIndex. décimale : 30.40 Géodésie physique Résumé : (Auteur) The mathematical model of a railway line is based on separate parameters for the plane and the longitudinal section. The alteration of super-elevation and curvature in conventional flat transition curves is based on a continuous function characterising this special transition curve. I propose to apply this interpolation function generally to the cross slope and to consider the curvature and the super-elevation as derived quantities. For spatial transition curves, the cross slope is a rotation in the transverse section plane which itself slopes longitudinally. The kernel of this study is the development of new spatial transition curves. Their curvature of the ground plane normally depends on cross slope, design speed, and the longitudinal section parameters. In this case the design speed is the speed at which no lateral acceleration occurs. As a consequence of its application, zones adjacent to transition curves and having a constant cross slope other than zero show exact circular arcs in the horizontal section only for constant longitudinal gradients and constant design speeds. As railway line the path of the centre of gravity should be chosen instead of the track centre line. Orthogonal to the latter, the sectional profile of the reference vehicle together with its cross slope defines the position of the track centre line and of both rails. Ideally the track centre line would be right on the path of its centre of gravity. But this would have too heavy effects on the design of railway construction and rail vehicles. Note de contenu : 1 Hintergrund
2 Zielsetzung
2.1 Vergleichende Betrachtung der gegenwärtigen Ubergangsbogen
2.2 Entwicklung eines praktikablen räumlichen Modells
3 Differentialgeometrische und physikalische Vorüberlegungen
3.1 Natürliche Geometrie einer Raumkurve
3.2 Trassierung im Erdschwerefeld
3.3 Modellierung der Ubergangsbogen
4 Ebene Ubergangsbogen
:; 4.1 Abhangigkeit der Krummung von der Überhöhung
4.2 Proportionale Überhöhungs- und Krümmungsbilder
4.3 Berücksichtigung stärkerer Querneigungen
4.4 Polynomansatze höherer Ordnung
4.5 Auswahl eines geeigneten Ansatzes
5 Raumlicher Ansatz
5.1 Anpassung der Interpolationsfunktionen
5.2 Krümmung der räumlichen Trassierungslinie
5.3 Grundrisskrümmung
5.4 Variable Geschwindigkeit
5.5 Torsion der räumlichen Trassierungslinie
5.6 CORIOLIS-Beschleunigung
5.7 Schwerebeschleunigung
5.8 Ableitungen des Ortsvektors nach der Zeit
5.9 Lateralbeschleunigung
6 Berechnungsverfahren
6.1 Numerische Integration
6.2 Trassenelement
6.3 Feintrassierung
Computerprogramm
8 Testbeispiele
8.1 Grenzparameter
8.2 Ebene Übergangsbogen
8.3 Räumliche Übergangsbogen
9 Ausblick Literaturverzeichnis
Anhang Ergänzungen zu den Formelherleitungen
A.I Übergang von (5.10) nach (5.11) A.2 Zu (5.15)
A.3 Übergang von (5.29) nach (5.33) durch Einsetzen von (5.30) bis (5.32) in (5.29) (nur Zähler Z)
A.4 Übergang von (5.26) mit (5.7) nach (5.34)
A.5 Übergang von (5.38) nach (5.39) (vgl. Abbildung 5.7)
A.6 Übergang von (5.41) mit (5.7) nach (5.51)Numéro de notice : 15358 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Monographie Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=62701 Réservation
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Code-barres Cote Support Localisation Section Disponibilité 15358-01 30.40 Livre Centre de documentation Géodésie Disponible Automatically conflating road vector data with orthoimagery / C.C. Chen in Geoinformatica, vol 10 n° 4 (December 2006)
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[article]
Titre : Automatically conflating road vector data with orthoimagery Type de document : Article/Communication Auteurs : C.C. Chen, Auteur ; Craig A. Knoblock, Auteur ; C. Shabani, Auteur Année de publication : 2006 Article en page(s) : pp 495 - 530 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image
[Termes IGN] appariement de modèles conceptuels de données
[Termes IGN] automatisation
[Termes IGN] Californie (Etats-Unis)
[Termes IGN] cohérence des données
[Termes IGN] conflation
[Termes IGN] données multisources
[Termes IGN] données vectorielles
[Termes IGN] fusion de données multisource
[Termes IGN] intégration de données
[Termes IGN] Montana (Etats-Unis)
[Termes IGN] orthoimage
[Termes IGN] point d'appui
[Termes IGN] réseau routierRésumé : (Auteur) Recent growth of the geospatial information on the web has made it possible to easily access a wide variety of spatial data. The ability to combine various sets of geospatial data into a single composite dataset has been one of central issues of modern geographic information processing. By conflating diverse spatial datasets, one can support a rich set of queries that could have not been answered given any of these sets in isolation. However, automatically conflating geospatial data from different data sources remains a challenging task. This is because geospatial data obtained from various data sources may have different projections, different accuracy levels and different formats (e.g., raster or vector format), thus resulting in various positional inconsistencies. Most of the existing algorithms only deal with vector to vector data conflation or require human intervention to accomplish vector data to imagery conflation. In this paper, we describe a novel geospatial data fusion approach, named AMS-Conflation, which achieves automatic vector to imagery conflation. We describe an efficient technique to automatically generate control point pairs from the orthoimagery and vector data by exploiting the information from the vector data to perform localized image processing on the orthoimagery. We also evaluate a filtering technique to automatically eliminate inaccurate pairs from the generated control points. We show that these conflation techniques can automatically align the roads in orthoimagery, such that 75% of the conflated roads are within 3.6 meters from the real road axes compared to 35% for the original vector data for partial areas of the county of St. Louis, MO. Copyright Springer Numéro de notice : A2006-549 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.1007/s10707-006-0344-6 En ligne : https://doi.org/10.1007/s10707-006-0344-6 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=28272
in Geoinformatica > vol 10 n° 4 (December 2006) . - pp 495 - 530[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 057-06041 RAB Revue Centre de documentation En réserve L003 Disponible Extracting dynamic spatial data from airborne imaging sensors to support traffic flow estimation / Charles K. Toth in ISPRS Journal of photogrammetry and remote sensing, vol 61 n° 3-4 (December 2006)
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Titre : Extracting dynamic spatial data from airborne imaging sensors to support traffic flow estimation Type de document : Article/Communication Auteurs : Charles K. Toth, Auteur ; Dorota A. Grejner-Brzezinska, Auteur Année de publication : 2006 Article en page(s) : pp 137 - 148 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image
[Termes IGN] caméra numérique
[Termes IGN] extraction automatique
[Termes IGN] image aérienne
[Termes IGN] information géographique
[Termes IGN] objet mobile
[Termes IGN] réseau routier
[Termes IGN] télémétrie laser aéroporté
[Termes IGN] trafic routierRésumé : (Auteur) The recent transition from analog to totally digital data acquisition and processing techniques in airborne surveying represents a major milestone in the evolution of spatial information science and practice. On one hand, the improved quality of the primary sensor data can provide the foundation for better automation of the information extraction processes. This phenomenon is also strongly supported by continuously expanding computer technology, which offers almost unlimited processing power. On the other hand, the variety of the data, including rich information content and better temporal characteristics, acquired by the new digital sensors and coupled with rapidly advancing processing techniques, is broadening the applications of airborne surveying. One of these new application areas is traffic flow extraction aimed at supporting better traffic monitoring and management. Transportation mapping has always represented a significant segment of civilian mapping and is mainly concerned with road corridor mapping for design and engineering purposes, infrastructure mapping and facility management, and more recently, environmental mapping. In all these cases, the objective of the mapping is to extract the static features of the object space, such as man-made and natural objects, typically along the road network. In contrast, the traffic moving in the transportation network represents a very dynamic environment, which complicates the spatial data extraction processes as the signals of moving vehicles should be identified and removed. Rather than removing and discarding the signals, however, they can be turned into traffic flow information. This paper reviews initial research efforts to extract traffic flow information from laserscanner and digital camera sensors installed in airborne platforms. Copyright ISPRS Numéro de notice : A2006-602 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.isprsjprs.2006.09.010 En ligne : https://doi.org/10.1016/j.isprsjprs.2006.09.010 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=28325
in ISPRS Journal of photogrammetry and remote sensing > vol 61 n° 3-4 (December 2006) . - pp 137 - 148[article]Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 081-06091 RAB Atlas / Beau livre Centre de documentation En réserve L003 Exclu du prêt Le GPS cinématique, une solution pour l'enrichissement de la géométrie dans un système d'information routier / Hocine Nechniche in XYZ, n° 109 (décembre 2006 - février 2007)
PermalinkA semi-automatic framework for highway extraction and vehicle detection based on a geometric deformable model / X. Niu in ISPRS Journal of photogrammetry and remote sensing, vol 61 n° 3-4 (December 2006)
PermalinkA snake-based approach for TIGER data conflation / W. Song in Cartography and Geographic Information Science, vol 33 n° 4 (October 2006)
PermalinkAd hoc shared-ride trip planning by mobile geosensor networks / Stephan Winter in International journal of geographical information science IJGIS, vol 20 n° 8 (september 2006)
PermalinkOn the design of schematic transport maps / S. Avelar in Cartographica, vol 41 n° 3 (September 2006)
PermalinkRéalisation d'un système de stéréovision mobile routier / N. Janvier in XYZ, n° 108 (septembre - novembre 2006)
PermalinkDétection et reconstruction de facettes 3D par approche hiérarchique par régions, à partir de couples d'images satellite THR / Nesrine Chehata in Bulletin d'information scientifique et technique de l'IGN, n° 75 (mars 2006)
PermalinkRoad extraction based on fuzzy logic and mathematical morphology from pan-sharpened Ikonos images / Ali Mohammadzadeh in Photogrammetric record, vol 21 n° 113 (March - May 2006)
PermalinkCalculs d'accessibilité, impact des spécifications du réseau routier sur les calculs d'accessibilité / Magali Di Salvo (2006)
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